Electric controller based on thermally superconductive heat dissipating plate and air conditioner outdoor unit

ABSTRACT

An electric controller based on a thermally superconducting heat dissipation plate ( 2 ) comprises an electric controller body ( 1 ) and the thermally superconducting heat dissipation plate ( 2 ); the electric controller body ( 1 ) comprises a PCB circuit board ( 11 ) and an electronic component ( 12 ); the electronic component ( 12 ) comprises a high-heat-output power device ( 121 ) and a low-heat-output electronic component ( 122 ), the high-heat-output power device ( 121 ) is located on a first surface of the PCB circuit board ( 11 ) and the low-heat-output electronic component ( 122 ) is located on a second surface of the PCB circuit board ( 11 ); and the thermally superconducting heat dissipation plate ( 2 ) is attached to the surface of the high-heat-output power device ( 121 ). Also disclosed is an air conditioner outdoor unit using the electric controller.

BACKGROUND OF THE PRESENT INVENTION Field of Invention

The present invention relates to the technical field of air conditioning devices, and in particular, to an electric controller based on a thermally superconducting heat dissipation plate, and an air conditioner outdoor unit.

Description of Related Arts

With the development of technology, people have higher requirements on quality of life, high-efficient, silent, variable-frequency, and energy-saving air conditioners with intelligent control have become indispensable in daily life. As function of the electric controller of an air conditioner becomes stronger, power modules such as an insulated gate bipolar transistor (IGBT), a metal-oxide semiconductor field-effect transistor (MOSFET), a diode, and an intelligent power module (IPM) in the electric controller generate more heat, and a heat dissipation requirement becomes higher. Therefore, air conditioner manufacturer pays more attention to thermal designs of electric controllers of air conditioners.

The electric controller of a household air conditioner always adopts radiator made of extruded aluminum for heat dissipation. For a high-performance variable-frequency heat pump air conditioner, the conventional radiator made of extruded aluminum can no longer meet the heat dissipation requirement. Some manufacturer has employed liquid cooling for heat dissipation. That is, a bypass is led out from a refrigerant pipeline of a compressor and is connected to a cooling pipeline of a liquid cooling plate of an electric controller. Heat generated by a power device of the electric controller is removed by the flowing refrigerant, thereby achieving an objective of cooling the electric controller. However, refrigerant inlet and outlet pipes need to be disposed in this heat dissipation method, which will make the refrigerant pipeline system of the entire air conditioner complex, and increase the amount of the refrigerant and the load of the compressor. Moreover, adding refrigerant branch requires joint connections and new pipes, not only costs but also leakage points of the refrigerant system are increased, which will lower the reliability of the system.

A thermally superconducting heat dissipation plate is a novel plate-type heat transfer device with a high thermal conducting rate, good temperature uniformity, and a high heat transfer power. The thermally superconducting heat dissipation plate is formed by disposing grid-like interconnected closed pipes on a metal plate and filling the closed pipes with a working medium.

The present invention provides an electric controller based on a thermally superconducting heat dissipation plate, and an air conditioner outdoor unit, so as to cool an electric controller of an air conditioner by using a quick heat conducting characteristic of the thermally superconducting heat dissipation plate

SUMMARY OF THE PRESENT INVENTION

To address the disadvantages in the prior art, the present invention provides an electric controller based on a thermally superconducting heat dissipation plate, and an air conditioner outdoor unit, so as to resolve the problems such as complexity of the entire mechanism or system, an increase in a refrigerant amount and compressor load, additional leakage points in the entire system, and reduced system reliability in the prior art when liquid cooling is used for heat dissipation of an electric controller of a high-performance variable-frequency heat pump air conditioner.

To accomplish the above and other related objects, the present invention provides an electric controller based on a thermally superconducting heat dissipation plate, comprising: an electric controller body and a thermally superconducting heat dissipation plate, where the electric controller body comprises a PCB circuit board and an electronic component; the PCB circuit board comprises a first surface and a second surface opposite to the first surface; the electronic component comprises a high-heat-output power device and a low-heat-output electronic component, the high-heat-output power device is located on the first surface of the PCB circuit board, and the low-heat-output electronic component is located on the second surface of the PCB circuit board; and the thermally superconducting heat dissipation plate is attached to the surface of the high-heat-output power device; thermally superconducting pipelines of a particular shape are formed in the thermally superconducting heat dissipation plate, the thermally superconducting pipelines are closed pipelines, and a heat transfer medium is filled in the thermally superconducting pipelines.

In a preferred solution of the electric controller based on a thermally superconducting heat dissipation plate according to the present invention, the thermally superconducting heat dissipation plate is a bent sheet.

In a preferred solution of the electric controller based on a thermally superconducting heat dissipation plate according to the present invention, the thermally superconducting heat dissipation plate comprises a vertical part, a horizontal part, and an arc part, where the vertical part is attached to the surface of the high-heat-output power device and parallel to the surface of the PCB circuit board, the horizontal part is located above the vertical part and perpendicular to the surface of the PCB circuit board, and the arc part connects the vertical part and the horizontal part; the vertical part extends upward from the high-heat-output power device, and the horizontal part extends from above the high-heat-output power device towards a direction away from the high-heat-output power device.

In a preferred solution of the electric controller based on a thermally superconducting heat dissipation plate according to the present invention, the thermally superconducting heat dissipation plate is parallel to the surface of the PCB circuit board.

In a preferred solution of the electric controller based on a thermally superconducting heat dissipation plate according to the present invention, the thermally superconducting heat dissipation plate extends from the vicinity of the high-heat-output power device towards a direction away from the high-heat-output power device.

In a preferred solution of the electric controller based on a thermally superconducting heat dissipation plate according to the present invention, cooling fins are disposed on the thermally superconducting heat dissipation plate, and the cooling fins are perpendicular or oblique to the surface of the thermally superconducting heat dissipation plate.

In a preferred solution of the electric controller based on a thermally superconducting heat dissipation plate according to the present invention, a cooling fin device is disposed on the thermally superconducting heat dissipation plate, the cooling fin device comprises a substrate and cooling fins, the substrate is attached to the surface of the thermally superconducting heat dissipation plate, and the cooling fins are fastened on the substrate and are perpendicular or oblique to the surface of the thermally superconducting heat dissipation plate.

In a preferred solution of the electric controller based on a thermally superconducting heat dissipation plate according to the present invention, the thermally superconducting heat dissipation plate is a composite plate, and the thermally superconducting pipelines are formed through a blow process.

In a preferred solution of the electric controller based on a thermally superconducting heat dissipation plate according to the present invention, the thermally superconducting pipelines have a single-side bulged pattern, a double-side bulged pattern or a double-side flat pattern on the thermally superconducting heat dissipation plate.

In a preferred solution of the electric controller based on a thermally superconducting heat dissipation plate according to the present invention, the thermally superconducting pipelines have a shape of a hexagonal honeycomb, a circular honeycomb, a quadrangular honeycomb, a plurality of end-to-end connected U shapes, rhombi, triangles or rings, or a combination thereof.

In a preferred solution of the electric controller based on a thermally superconducting heat dissipation plate according to the present invention, openings are provided in areas between the thermally superconducting pipelines on the thermally superconducting heat dissipation plate.

The present invention further provides an air conditioner outdoor unit, comprising the electric controller described in any of the foregoing solutions.

In a preferred solution of the air conditioner outdoor unit according to the present invention, the air conditioner outdoor unit further comprises: a housing, an air conditioner fan, an air conditioner partition support, an air conditioner compressor, and an air conditioner heat exchanger, where the electric controller, the thermally superconducting heat dissipation plate, the air conditioner fan, the air conditioner partition support, the air conditioner compressor, and the air conditioner heat exchanger are all located in the housing; the electric controller body and the air conditioner compressor are located on one side of the air conditioner partition support, and the thermally superconducting heat dissipation plate, the air conditioner fan and the air conditioner heat exchanger are located on the other side of the air conditioner partition support.

In a preferred solution of the air conditioner outdoor unit according to the present invention, the air conditioner outdoor unit further comprises: an air conditioner fan support located in the housing, where the air conditioner fan is fastened on the air conditioner heat exchanger and an inner wall of the housing through the air conditioner fan support.

In a preferred solution of the air conditioner outdoor unit according to the present invention, the PCB circuit board of the electric controller is parallel to the air conditioner partition support, and an end of the thermally superconducting heat dissipation plate which is away from the high-heat-output power device extends to above the air conditioner fan and the air conditioner fan support.

As described above, the electric controller based on a thermally superconducting heat dissipation plate and the air conditioner outdoor unit according to the present invention has the following beneficial effects:

1) The thermally superconducting heat dissipation plate is used as a radiator, so that the radiator is simple in structure and capable of quickly transferring heat from a heating electronic component to the thermally superconducting heat dissipation plate and evenly distributing the heat over the entire thermally superconducting heat dissipation plate. This increases an effective heat dissipation area and achieves high heat dissipation efficiency, thereby lowering the temperature of the heating electronic component.

2) The electric controller is disposed vertically to facilitate installation of the thermally superconducting heat dissipation plate, so that an available space of the thermally superconducting heat dissipation plate is increased and the heating electronic component is located at a lower end of the thermally superconducting heat dissipation plate, facilitating heat conduction of the thermally superconducting heat dissipation plate from bottom to top.

3) The high-heat-output power device in the electric controller is disposed on one surface of the PCB circuit board, and the low-heat-output electronic component is disposed on the other surface of the PCB circuit board, thereby facilitating installation of the thermally superconducting heat dissipation plate and the high-heat-output power device as well as protection for other electronic components, and enhancing the reliability of the air conditioner outdoor unit.

4) The cooling fins are disposed on the thermally superconducting heat dissipation plate, thereby effectively increasing the heat dissipation area, improving the heat dissipation capability, and expanding a usage range of the electric controller of the air conditioner.

5) The thermally superconducting heat dissipation plate is provided with the openings, which can enhance air convection on the upper surface of the thermally superconducting heat dissipation plate, help drain water accumulated on the surface of the thermally superconducting heat dissipation plate, and further facilitate water proofing of the electric controller, so that the water proofing of the electric controller is easier.

6) The thermally superconducting heat dissipation plate is disposed in a gap between the outer edge of the fan and the housing, so that the space of the outdoor unit is utilized effectively while heat is dissipated by using the air flow of the air conditioner fan, thereby enhancing the heat dissipation effect.

7) The air conditioner outdoor unit according to the present invention does not use a heat dissipation structure that is based on a refrigerant and a cold plate, so that a refrigerant pipeline branch can be reduced while a heat dissipation requirement of the electric controller with high heat output can be met, thereby simplifying the structure of the radiator, reducing system leakage points and improving the reliability of the system.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural diagram of an electric controller based on a thermally superconducting heat dissipation plate provided in Embodiment 1 of the present invention.

FIG. 2 is a partial enlarged cross-sectional diagram of a thermally superconducting pipeline part of a thermally superconducting heat dissipation plate in the electric controller based on a thermally superconducting heat dissipation plate provided in Embodiment 1 of the present invention.

FIG. 3 is a structural diagram of a thermally superconducting heat dissipation plate in the electric controller based on a thermally superconducting heat dissipation plate provided in Embodiment 1 of the present invention, the thermally superconducting pipeline has a hexagonal honeycomb shape.

FIG. 4 is an enlarged schematic structural diagram of an area A in FIG. 3.

FIG. 5 and FIG. 6 are structural diagrams of an electric controller based on a thermally superconducting heat dissipation plate provided in Embodiment 2 of the present invention.

FIG. 7 and FIG. 8 are structural diagrams of an air conditioner outdoor unit provided in Embodiment 3 of the present invention.

DESCRIPTIONS OF REFERENCE NUMERALS

1 Electric controller body

11 PCB circuit board

12 Electronic component

121 High-heat-output power device

122 Low-heat-output electronic component

2 Thermally superconducting heat dissipation plate

21 Vertical part

22 Arc part

23 Horizontal part

24 First plate

25 Second plate

26 Thermally superconducting pipeline

27 Non-pipeline part

28 Bump structure

29 Heat transfer medium

3 Cooling fin device

31 Substrate

32 Cooling fin

4 Opening

5 Housing

61 Air conditioner fan

62 Air conditioner partition support

63 Air conditioner fan support

7 Air conditioner compressor

8 Air conditioner heat exchanger

9 Thermal gasket

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Implementations of the present invention are illustrated below through specific examples. Persons skilled in the art can easily understand other advantages and efficacy of the present invention according to the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations. Various modifications or variations can also be made on details in this specification based on different opinions and applications without departing from the spirit of the present invention.

Refer to FIG. 1 to FIG. 8. It should be noted that, the figures provided in the embodiments merely illustrate the basic conception of the present invention schematically. Therefore, the figures only show components related to the present invention, and are not drawn according to the quantity, shapes and sizes of components during actual implementation. The pattern, quantity and ratio of components during actual implementation can be changed arbitrarily, and the component layout may also be more complex.

Embodiment 1

Referring to FIG. 1, the present invention provides an electric controller based on a thermally superconducting heat dissipation plate. The electric controller based on a thermally superconducting heat dissipation plate comprises: an electric controller body 1 and a thermally superconducting heat dissipation plate 2. The electric controller body 1 comprises a PCB circuit board 11 and an electronic component 12. The PCB circuit board 11 comprises a first surface and a second surface opposite to the first surface. The electronic component 12 comprises a high-heat-output power device 121 and a low-heat-output electronic component 122. The high-heat-output power device 121 is located on the first surface of the PCB circuit board 11, and the low-heat-output electronic component 122 is located on the second surface of the PCB circuit board 11. The thermally superconducting heat dissipation plate 2 is attached to the surface of the high-heat-output power device 121. Thermally superconducting pipelines 26 with a particular shape are formed in the thermally superconducting heat dissipation plate 2, the thermally superconducting pipelines 26 are closed pipelines, and heat transfer medium 29 is filled in the thermally superconducting pipelines 26.

It should be noted that, the “high heat output” of the high-heat-output power device 121 is a relative concept with respect to the low-heat-output electronic component. In this embodiment, the high-heat-output power device 121 refers to a power device such as a MOSFET (metal-oxide-semiconductor field effect transistor), an IGBT (insulated gate bipolar transistor), a diode, or an IPM (intelligent power module) in the electric controller body 1; other electronic components, comprising a capacitor, an inductor, a transformer, a resistor, and the like, are all low-heat-output electronic components 122. The high-heat-output power device 121 in the electric controller body 1 is disposed on one surface of the PCB circuit board 11, and the low-heat-output electronic component 122 is disposed on the other surface of the PCB circuit board 11, so as to facilitate the installation of the thermally superconducting heat dissipation plate 2 and the high-heat-output power device 121 and the protection for other electronic components, thereby enhancing the reliability of the air conditioner outdoor unit.

In an example, the thermally superconducting heat dissipation plate 2 is a bent sheet.

In an example, the thermally superconducting heat dissipation plate 2 comprises a vertical part 21, a horizontal part 23, and an arc part 22. The vertical part 21 is attached to the surface of the high-heat-output power device 121 and parallel to the surface of the PCB circuit board 11. The horizontal part 23 is located above the vertical part 21 and perpendicular to the surface of the PCB circuit board 11. The arc part 22 connects the vertical part 21 and the horizontal part 23. The vertical part 21 extends upward from the high-heat-output power device 121, and the horizontal part 23 extends from above of the high-heat-output power device 121 towards a direction away from the high-heat-output power device 121. The thermally superconducting heat dissipation plate 2 is a bent sheet to fully utilize an interior space of the air conditioner outdoor unit, so that the thermally superconducting heat dissipation plate 2 with a sufficient heat dissipation area can be disposed in a limited space.

In an example, the thermally superconducting heat dissipation plate 2 is a composite plate structure, and the surface of the thermally superconducting heat dissipation plate 2 may be in a double-side bulged pattern as shown in FIG. 2. The thermally superconducting heat dissipation plate 2 comprises a first plate 24 and a second plate 25. The first plate 24 and the second plate 25 are composited together through a rolling process. The thermally superconducting pipelines 26 are formed through a blow process. During forming of the thermally superconducting pipelines 26, bump structure 28 corresponding to the thermally superconducting pipeline 26 are formed both on the surface of the first plate 24 and the surface of the second plate material 25. Apart from the structure shown in FIG. 2, when the thermally superconducting heat dissipation plate 2 comprises the first plate 24 and the second plate 25, the bump structure 28 corresponding to the thermally superconducting pipelines 26 may be formed on the surface of the first plate material 24 or on the surface of the second plate material 25 while the thermally superconducting pipelines 26 are formed through a blow process, that is, the surface of the thermally superconducting heat dissipation plate 2 is in a single-side bulged pattern. The surface of the thermally superconducting heat dissipation plate 2 may be in a double-side flat pattern, and in this case, the specific structure of the thermally superconducting heat dissipation plate 2 may be the same as that of the double-side flat thermally superconducting heat dissipation plate structure in the Patent Application No. CN201511029540.3. For specific details, refer to the document of the patent application. Details are not described herein again.

In an example, the heat transfer medium 29 is a fluid. Preferably, the heat transfer medium 29 is gas, liquid, or a mixture of gas and liquid. More preferably, in this embodiment, the heat transfer medium 29 is a mixture of liquid and gas.

In an example, the thermally superconducting pipelines 26 may have a shape of a hexagonal honeycomb, a crisscross grid, a plurality of end-to-end connected U shapes, rhombi, triangles, rings, or any combination of two or more of the foregoing shapes. In FIG. 3, the thermally superconducting pipelines 26 in the shape of a hexagonal honeycomb are used as an example. It can be learned from FIG. 3 that, the interior of the hexagons and a marginal area of the thermally superconducting heat dissipation plate 2 in FIG. 3 are non-pipeline parts 27, and the hexagons which are connected to each other are the thermally superconducting pipelines 26.

In an example, the thermally superconducting heat dissipation plate 2 should be made of a material with good thermal conductivity. Preferably, in this embodiment, the material of the thermally superconducting heat dissipation plate 2 may be copper, a copper alloy, aluminum, an aluminum alloy, or any combination thereof.

In an example, referring to FIG. 3 and FIG. 4, openings 4 are provided in areas between the thermally superconducting pipelines 26 on the thermally superconducting heat dissipation plate 2, that is, the openings 4 are formed inside the hexagons in FIG. 3 and FIG. 4. The openings 4 are preferably through holes penetrating the entire thickness of the thermally superconducting heat dissipation plate 2. The openings 4 may be in a circular shape, a rectangular shape, a hexagonal shape, or the like according to actual requirements. In FIG. 3 and FIG. 4, the openings 4 in a circular shape are used as an example. The thermally superconducting heat dissipation plate 2 is provided with the openings 4, which can enhance air convection on the upper surface of the thermally superconducting heat dissipation plate 2, help drain water accumulated on the surface of the thermally superconducting heat dissipation plate 2, and further facilitate water proofing of the electric controller body 1, so that the water proofing of the electric controller body 1 is easier.

Embodiment 2

Referring to FIG. 5 and FIG. 6, the present invention further provides an electric controller based on a thermally superconducting heat dissipation plate. The electric controller based on a thermally superconducting heat dissipation plate in this embodiment is substantially the same as that in Embodiment 1, the difference is that in Embodiment 1, the thermally superconducting heat dissipation plate 2 may be a bent sheet and includes a vertical part 21, a horizontal part 23, and an arc part 22. The vertical part 21 is attached to the surface of the high-heat-output power device 121 and parallel to the surface of the PCB circuit board 11. The horizontal part 23 is located above the vertical part 21 and perpendicular to the surface of the PCB circuit board 11. The arc part 22 connects the vertical part 21 and the horizontal part 23, the vertical part 21 extending upward from the high-heat-output power device 121 and the horizontal part 23 extending from above of the high-heat-output power device 121 towards a direction away from the high-heat-output power device 121. While in this embodiment, the thermally superconducting heat dissipation plate 2 is a straight sheet, which is parallel to the surface of the PCB circuit board 11, extends from the vicinity of the high-heat-output power device 121 towards a direction away from the high-heat-output power device 121, and specifically extends towards an upward direction away from the high-heat-output power device 121.

In an example, a cooling fin device 3 is provided on the thermally superconducting heat dissipation plate 2, the cooling fin device 3 includes a substrate 31 and cooling fins 32, the substrate 31 is attached to the surface of the thermally superconducting heat dissipation plate 2, and the cooling fins 32 are fastened on the substrate 31 and are perpendicular or oblique to the surface of the thermally superconducting heat dissipation plate 2. Specifically, the substrate 31 may be disposed on the surface of the thermally superconducting heat dissipation plate 2 through a process of welding, bonding, or screwing, and the surface of the substrate 31 is in contact with the surface of the thermally superconducting heat dissipation plate 2. The cooling fins 32 may be fastened on the surface of the substrate 31 through a profile extrusion process, an insert extrusion process, a thermal conductive glue bonding process, a brazing process, or the like. The cooling fins 32 may be perpendicular to the substrate 31 and the surface of the thermally superconducting heat dissipation plate 2, as shown in FIG. 5. Alternatively, the cooling fins 32 may be oblique to the substrate 31 and the surface of the thermally superconducting heat dissipation plate 2, as shown in FIG. 6.

In an example, when the cooling fins 32 are oblique to the substrate 31 and the surface of the thermally superconducting heat dissipation plate 2, the cooling fins 32 may tilt downward or upward. In FIG. 6, the cooling fins 32 tilting downward are used as an example.

In another example, the cooling fins 32 are disposed on the thermally superconducting heat dissipation plate 2. The cooling fins 32 are directly fastened on the surface of the thermally superconducting heat dissipation plate 2 through a welding or bonding process. Similarly, the cooling fins 32 may be perpendicular or oblique to the surface of the thermally superconducting heat dissipation plate 2.

In an example, the cooling fins 32 may be metal plates made of a common metal material, for example, aluminum plates or copper plates. The cooling fin device 3 comprising the cooling fins 32 or the cooling fins 32 is/are disposed on the thermally superconducting heat dissipation plate 2, so that a heat dissipation area is effectively increased, the heat dissipation capability is improved, and a usage range of the electric controller of the air conditioner is expanded.

In an example, a plurality of cooling fins 32 is provided. The cooling fins 32 are distributed parallel, a spacing is arranged between the adjacent cooling fins, and each cooling fins may have equal lengths or different lengths according to actual requirements.

Embodiment 3

Referring to FIG. 7 and FIG. 8, the present invention further provides an air conditioner outdoor unit. The air conditioner outdoor unit comprises the electric controller based on a thermally superconducting heat dissipation plate described in Embodiment 1. Referring to Embodiment 1 for the specific structure of the electric controller based on a thermally superconducting heat dissipation plate. Details are not described herein again.

In an example, further referring to FIG. 7 and FIG. 8, the air conditioner outdoor unit further comprises a housing 5, an air conditioner fan 61, an air conditioner partition support 62, an air conditioner compressor 7, and an air conditioner heat exchanger 8. The electric controller, the thermally superconducting heat dissipation plate 2, the air conditioner fan 61, the air conditioner partition support 62, the air conditioner compressor 7 and the air conditioner heat exchanger 8 are located in the housing 5. The electric controller body 1 and the air conditioner compressor 7 are located on one side of the air conditioner partition support 62; the thermally superconducting heat dissipation plate 2, the air conditioner fan 61 and the air conditioner heat exchanger 8 are located on the other side of the air conditioner partition support 62. The air conditioner heat exchanger 8 is fastened on an inner wall of the housing 5, and the shape of the air conditioner heat exchanger 8 may be set according to actual requirements. In FIG. 7 and FIG. 8, the air conditioner heat exchanger 8 in an L shape is used as an example; however, the shape of an actual structure is not limited thereto.

In an example, the air conditioner outdoor unit further comprises an air conditioner fan support 63 and a thermal gasket 9. The air conditioner fan support 63 and the thermal gasket 9 are both located in the housing 5. The air conditioner fan 61 is fastened on the air conditioner heat exchanger 8 and an inner wall of the housing 5 through the air conditioner fan support 63. The thermally superconducting heat dissipation plate 2 is attached to the surface of the high-heat-output power device 121 through the thermal gasket 9.

In an example, the PCB circuit board 11 of the electric controller is parallel to the air conditioner partition support 62, that is, the electric controller is disposed vertically. An end of the thermally superconducting heat dissipation plate 2 which is away from the high-heat-output power device 121 extends to above the air conditioner fan 61 and the air conditioner fan support 63, that is, the horizontal part 23 of the thermally superconducting heat dissipation plate 2 is located in a gap between the outer edge of the air conditioner fan 61 and the housing 5. The electric controller is disposed vertically to facilitate installation of the thermally superconducting heat dissipation plate 2, so that an available space of the thermally superconducting heat dissipation plate 2 is increased and the high-heat-output power device 121 is located at a lower end of the thermally superconducting heat dissipation plate 2, facilitating heat conduction of the thermally superconducting heat dissipation plate 2 from bottom to top. The horizontal part 23 of the thermally superconducting heat dissipation plate 2 is disposed in the gap between the outer edge of the air conditioner fan 61 and the housing 5, so that the space of the air conditioner outdoor unit is utilized effectively while heat is dissipated by using the air flow of the air conditioner fan 61, thereby enhancing the heat dissipation effect.

Embodiment 4

The present invention further provides an air conditioner outdoor unit. The air conditioner outdoor unit in this embodiment is substantially the same as that in Embodiment 3, except that the electric controller in Embodiment 3 is the electric controller in Embodiment 1, while the electric controller in this embodiment is the electric controller in Embodiment 2. Except the electric controller, other structures of the air conditioner outdoor unit in this embodiment are the same as those of the air conditioner outdoor unit in Embodiment 3. Referring to Embodiment 3 for details, the specific details are not described herein again.

In an example, in this embodiment, the cooling fins 32 extend from the thermally superconducting heat dissipation plate 2 towards a direction away from the high-heat-output power device 121, that is, an end of the thermally superconducting heat dissipation plate 2 which is away from the high-heat-output power device 121 extends to above the air conditioner fan 61 and the air conditioner fan support 63. That is, the cooling fins 32 are located in a gap between the outer edge of the air conditioner fan 61 and the housing 5. The cooling fins 32 are disposed in the gap between the outer edge of the air conditioner fan 61 and the housing 5, so that the space of the air conditioner outdoor unit is effectively utilized while heat is dissipated by using the air flow of the air conditioner fan 61, thereby enhancing the heat dissipation effect.

In conclusion, the present invention provides an electric controller based on a thermally superconducting heat dissipation plate, and an air conditioner outdoor unit. The electric controller based on a thermally superconducting heat dissipation plate includes an electric controller body and a thermally superconducting heat dissipation plate. The electric controller body includes a PCB circuit board and an electronic component. The PCB circuit board comprises a first surface and a second surface opposite to the first surface. The electronic component comprises a high-heat-output power device and a low-heat-output electronic component, the high-heat-output power device is located on the first surface of the PCB circuit board, and the low-heat-output electronic component is located on the second surface of the PCB circuit board. The thermally superconducting heat dissipation plate is attached to the surface of the high-heat-output power device. Thermally superconducting pipelines of a particular shape are formed in the thermally superconducting heat dissipation plate, the thermally superconducting pipelines are closed pipelines, and a heat transfer medium is filled in the thermally superconducting pipelines. The thermally superconducting heat dissipation plate is used as a radiator, so that the radiator is simple in structure and capable of quickly transferring heat from a heating electronic component to the thermally superconducting heat dissipation plate and evenly distributing the heat over the entire thermally superconducting heat dissipation plate. This increases an effective heat dissipation area and improves heat dissipation efficiency, thereby lowering the temperature of the heating electronic component. The electric controller is disposed vertically to facilitate installation of the thermally superconducting heat dissipation plate, so that an available space of the thermally superconducting heat dissipation plate is increased and the heating electronic component is located at a lower end of the thermally superconducting heat dissipation plate, facilitating thermal superconducting of the thermally superconducting heat dissipation plate from bottom to top. The high-heat-output power device in the electric controller is disposed on one surface of the PCB circuit board, and the low-heat-output electronic component is disposed on the other surface of the PCB circuit board, thereby facilitating installation of the thermally superconducting heat dissipation plate and the high-heat-output power device as well as protection for other electronic components, and enhancing the reliability of the air conditioner outdoor unit. The thermally superconducting heat dissipation plate is provided with the openings, which can enhance air convection on the upper surface of the thermally superconducting heat dissipation plate, help drain water accumulated on the surface of the thermally superconducting heat dissipation plate, and further facilitate water proofing of the electric controller, so that the water proofing of the electric controller is easier. The air conditioner outdoor unit according to the present invention does not use a heat dissipation structure that is based on a refrigerant and a cold plate, so that a refrigerant pipeline branch can be reduced while a heat dissipation requirement of the electric controller with high heat output can be met, thereby simplifying the structure of the radiator, reducing system leakage points and improving the reliability of the system.

The foregoing embodiments are only to illustrate the principle and efficacy of the present invention exemplarily, and are not to limit the present invention. Any person skilled in the art can make modifications or variations on the foregoing embodiments without departing from the spirit and scope of the present invention. Accordingly, all equivalent modifications or variations completed by persons of ordinary skill in the art without departing from the spirit and technical thinking disclosed by the present invention should fall within the scope of claims of the present invention. 

1. An electric controller based on a thermally superconducting heat dissipation plate, comprising: an electric controller body and a thermally superconducting heat dissipation plate, wherein the electric controller body comprises a PCB circuit board and an electronic component; the PCB circuit board comprises a first surface and a second surface opposite to the first surface; the electronic component comprises a high-heat-output power device and a low-heat-output electronic component, the high-heat-output power device is located on the first surface of the PCB circuit board, and the low-heat-output electronic component is located on the second surface of the PCB circuit board; and the thermally superconducting heat dissipation plate is attached to the surface of the high-heat-output power device; thermally superconducting pipelines of a particular shape are formed in the thermally superconducting heat dissipation plate, the thermally superconducting pipelines are closed pipelines, and heat transfer medium is filled in the thermally superconducting pipelines.
 2. The electric controller based on a thermally superconducting heat dissipation plate according to claim 1, wherein the thermally superconducting heat dissipation plate is a bent sheet.
 3. The electric controller based on a thermally superconducting heat dissipation plate according to claim 2, wherein the thermally superconducting heat dissipation plate comprises a vertical part, a horizontal part, and an arc part, wherein the vertical part is attached to the surface of the high-heat-output power device and parallel to the surface of the PCB circuit board, the horizontal part is located above the vertical part and perpendicular to the surface of the PCB circuit board, and the arc part connects the vertical part and the horizontal part; the vertical part extends upward from the high-heat-output power device, and the horizontal part is located above the high-heat-output power device, and extends towards a direction away from the high-heat-output power device.
 4. The electric controller based on a thermally superconducting heat dissipation plate according to claim 1, wherein the thermally superconducting heat dissipation plate is parallel to the surface of the PCB circuit board.
 5. The electric controller based on a thermally superconducting heat dissipation plate according to claim 4, wherein the thermally superconducting heat dissipation plate extends from the vicinity of the high-heat-output power device towards a direction away from the high-heat-output power device.
 6. The electric controller based on a thermally superconducting heat dissipation plate according to claim 5, wherein cooling fins are disposed on the thermally superconducting heat dissipation plate, and the cooling fins are perpendicular or oblique to the surface of the thermally superconducting heat dissipation plate.
 7. The electric controller based on a thermally superconducting heat dissipation plate according to claim 5, wherein a cooling fin device is disposed on the thermally superconducting heat dissipation plate, the cooling fin device comprises a substrate and cooling fins, the substrate is attached to the surface of the thermally superconducting heat dissipation plate, and the cooling fins are fastened on the substrate and are perpendicular or oblique to the surface of the thermally superconducting heat dissipation plate.
 8. The electric controller based on a thermally superconducting heat dissipation plate according to claim 1, wherein the thermally superconducting heat dissipation plate is a composite plate, and the thermally superconducting pipelines are formed through a blow process.
 9. The electric controller based on a thermally superconducting heat dissipation plate according to claim 8, wherein the thermally superconducting pipelines have a single-side bulged pattern, a double-side bulged pattern or a double-side flat pattern on the thermally superconducting heat dissipation plate.
 10. The electric controller based on a thermally superconducting heat dissipation plate according to claim 1, wherein the thermally superconducting pipelines have a shape of a hexagonal honeycomb, a circular honeycomb, a quadrangular honeycomb, a plurality of end-to-end connected U shapes, rhombi, triangles, rings, or a combination thereof.
 11. The electric controller based on a thermally superconducting heat dissipation plate according to claim 1, wherein openings are provided in areas between the thermally superconducting pipelines on the thermally superconducting heat dissipation plate.
 12. An air conditioner outdoor unit, comprising the electric controller according to claim
 1. 13. The air conditioner outdoor unit according to claim 12, further comprising: a housing, an air conditioner fan, an air conditioner partition support, an air conditioner compressor, and an air conditioner heat exchanger, wherein the electric controller, the thermally superconducting heat dissipation plate, the air conditioner fan, the air conditioner partition support, the air conditioner compressor, and the air conditioner heat exchanger are all located in the housing; the electric controller body and the air conditioner compressor are located on one side of the air conditioner partition support, and the thermally superconducting heat dissipation plate, the air conditioner fan and the air conditioner heat exchanger are located on the other side of the air conditioner partition support.
 14. The air conditioner outdoor unit according to claim 13, further comprising: an air conditioner fan support located in the housing, wherein the air conditioner fan is fastened on the air conditioner heat exchanger and an inner wall of the housing through the air conditioner fan support.
 15. The air conditioner outdoor unit according to claim 14, wherein the PCB circuit board of the electric controller is parallel to the air conditioner partition support, and an end of the thermally superconducting heat dissipation plate which is away from the high-heat-output power device extends to above the air conditioner fan and the air conditioner fan support. 